diff --git a/xCAT-test/autotest/testcase/commoncmd/check_provisioning_source.sh b/xCAT-test/autotest/testcase/commoncmd/check_provisioning_source.sh
index fec31edd3..0fb2c7ac8 100755
--- a/xCAT-test/autotest/testcase/commoncmd/check_provisioning_source.sh
+++ b/xCAT-test/autotest/testcase/commoncmd/check_provisioning_source.sh
@@ -21,7 +21,8 @@
 # Run --baseline before provisioning: an earlier flat run leaves management-node requests for the
 # same address, and counting the whole log fails a later hierarchical run for them. And only a
 # request under /install or /tftpboot is a boot payload: a 404 for /favicon.ico is a request from
-# the compute node that carries no payload, and it must not stand for one.
+# the compute node that carries no payload, and it must not stand for one. wget asks for the root
+# image as //install/..., so the leading slash repeats.
 #
 # Scope: the PXE ROM exchange hands out xcat/xnba.kpxe over TFTP and httpd never sees it.
 # xnba.kpxe is the same binary on both servers, so it decides nothing about the fetch source.
@@ -108,7 +109,7 @@ count_local_requests()
             if ($1 != ip && $2 != ip) next
             path = ""
             for (i = 1; i <= NF; i++) if ($i ~ /^"(GET|HEAD|POST)$/) { path = $(i + 1); break }
-            if (path ~ /^\/(install|tftpboot)\//) payload++
+            if (path ~ /^\/+(install|tftpboot)\//) payload++
         }
         END { print token, "ok", payload + 0, fresh + 0, total + 0 }
     ' $logs
diff --git a/xCAT-test/bats/check_provisioning_source.bats b/xCAT-test/bats/check_provisioning_source.bats
index 6a1d78637..c3d4ab94e 100644
--- a/xCAT-test/bats/check_provisioning_source.bats
+++ b/xCAT-test/bats/check_provisioning_source.bats
@@ -198,10 +198,9 @@ seed_logs()
     [[ "$output" == *"no httpd access log could be read on $SN"* ]]
 }
 
-# The service node is provisioned before the baseline, so on a correct hierarchical run the
-# management node serves nothing after it and its log does not grow. Every other case here appends
-# a management-node line after the baseline, so none of them reaches this state.
-@test "a management node log that does not grow after the baseline still passes" {
+# The management node provisions the service node BEFORE this baseline, so it can serve nothing
+# after it. That is the hierarchical result, and it was read as a broken log.
+@test "a management node that serves nothing after the baseline passes" {
     seed_logs
     take_baseline
     access_line "$CN_IP" 12345678 /tftpboot/xcat/genesis.kernel >>"$SN_LOG"
@@ -211,9 +210,7 @@ seed_logs()
     [[ "$output" == *"provisioning source ok"* ]]
 }
 
-# The guard the case above relaxes still has a job. An empty log makes "the management node served
-# nothing" a property of the file, not a measurement.
-@test "an empty management node log fails the check instead of passing it" {
+@test "a management node log with no entry at all fails the check instead of reading as silence" {
     : >"$MN_LOG"
     access_line 192.0.2.30 512 /install/rh/x86_64/ >"$SN_LOG"
     take_baseline
@@ -221,8 +218,34 @@ seed_logs()
 
     run_check
     [ "$status" -ne 0 ]
-    [[ "$output" == *"no httpd access log with entries could be read on"* ]]
-    [[ "$output" != *"provisioning source ok"* ]]
+    [[ "$output" == *"no httpd access log with entries could be read on mn01"* ]]
+}
+
+# The compute node fetches the root image with wget from a URL that carries a double slash, so
+# the path in the log reads //install/... and the payload filter did not match it.
+@test "a boot payload requested under a doubled slash counts" {
+    seed_logs
+    take_baseline
+    access_line "$CN_IP" 978729607 //install/netboot/ubuntu/x86_64/compute/rootimg.cpio.gz >>"$SN_LOG"
+    access_line 192.0.2.21 4096 /install/rh/x86_64/ >>"$MN_LOG"
+
+    run_check
+    [ "$status" -eq 0 ]
+    [[ "$output" == *"provisioning source ok"* ]]
+}
+
+@test "a doubled-slash boot payload from the management node reads as a flat provision" {
+    seed_logs
+    take_baseline
+    access_line "$CN_IP" 12345678 /tftpboot/xcat/genesis.kernel >>"$SN_LOG"
+    {
+        access_line 192.0.2.21 4096 /install/rh/x86_64/
+        access_line "$CN_IP" 978729607 //install/netboot/ubuntu/x86_64/compute/rootimg.cpio.gz
+    } >>"$MN_LOG"
+
+    run_check
+    [ "$status" -ne 0 ]
+    [[ "$output" == *"this provision was flat"* ]]
 }
 
 @test "the Debian per-vhost log format is read as the client address" {